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Crystal structure of the tetrameric dgtp-bound SAMHD1 mutant catalytic core

Analyse Crystal structure of the tetrameric dgtp-bound SAMHD1 mutant catalytic core in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4BZB
Type
protein
Length
1,924 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Deoxynucleoside triphosphate triphosphohydrolase SAMHD1
EC
3.1.5.-
UniProt
Q9Y3Z3
Ligands
DGT, MG
Pockets
20 · best druggability 0.89

Structure

x-ray diffraction · 1 distinct chain · 52% helix, 13% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, B, C, DDeoxynucleoside triphosphate triphosphohydrolase SAMHD1 (EC 3.1.5.-)protein48152% helix, 13% strandQ9Y3Z3

Ligands and binding sites

  • DGT · 2'-deoxyguanosine-5'-triphosphate · ligand · 12 copies · chains A, C, D, B
  • MG · Magnesium ion · metal · 8 copies · chains A, C, D, B

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

20 pockets found on a 1 Å grid, 15 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
110980.890.91152DGT, MG
28930.890.92121DGT, MG
31460.820.9826empty
41390.820.9825empty
59630.760.7970DGT, MG

Interfaces

6 interfaces between chains.

  • A–C · 2148 Ų buried · 33 hydrogen bonds · protein-protein
  • B–D · 2100 Ų buried · 27 hydrogen bonds · protein-protein
  • A–D · 1913 Ų buried · 23 hydrogen bonds · protein-protein
  • B–C · 1912 Ų buried · 23 hydrogen bonds · protein-protein
  • A–B · 531 Ų buried · 6 hydrogen bonds · protein-protein

Compared structures

  • 4BZB · Crystal structure of the tetrameric dGTP-bound SAMHD1 mutant catalytic core · the same entry in another collection · chain A against A, TM-score 1.00

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